Pump-cylinder



(No Model.)

H. JONES.

PUMP CYLINDER.

-N0.354=,982.. Paten tedDecQ28, 1886.

- N. PETERS. Phmo-Lnnngnahnr, Washington, 0,0.

Nrrn STATES HARRY JONES, OF RICHMOND, INDIANA.

PUMP-CYLINDER.

SPECIFICATIQN forming part of Letters Patent No. 354,982, dated December 28, 1886.

Application filed July 8, 1885. Serial No. 170.973. (No model.)

To aZZ whom it may concern:

Be it known that I, HARRY JoNEs, a citizen of the United States, residing at Richmond, in the county of \Vayne and State of Indiana, have invented certain new and useful Improve mentsin Pump-Cylinders, of which the following is a specification, reference being had .therein to the accompanying drawings.

My invention relates to an improved cylinder for pumps; and it consists in the features more particularly hereinafter described and claimed,reference being had to the accompanying drawings, forming part of thisspecification.

Pump cylinders as hitherto constructed have been formed with only one head adapted to receive and seat an inlet-valve; hence when such seat becomes so worn as not to afford a reliable seat for the valve the procurement of a new cylinder or of a new head for the cylinder was necessitated,involving expense and trouble.

The object of my inventionis to obviate this, to which end I form a cylinder having both its heads adapted to receive and seat a valve, so that when the head in use, as the valve head or seat becomes worn the cylinder may be simply reversed and a new valve head or seat brought into action. The means of accomplishing this may be better understood by reference to the drawings, wherein- Figures 1 and 2 are longitudinal sections of my improved pumpcylinder, Fig. 1 showing one head, while Fig. 2 shows the other head used as the valve head or seat.

A is the body of the cylinder, to which are attached the heads B D, A being screwthreaded at each end, as shown'at a a, for such purpose, though, if desired, the securement may be by flangesin a manner well-knownin the art. As here shown for the sake of illustration, the two heads B D are of different kinds, one adapted for the ordinary clapperyalve, while the other is adapted for a ballvalve. It is evident, however, that the two heads may be of the same description. The head B carries at its periphery the threaded flange b, by which it is secdred to A. Upon its center is formed the neck or nozzle 0, by which it may be attached to the pump-stock. Upon its interior face, around the opening in C, is the annular grooved, leavingan edge, a, surrounding G and forming a tight joint or seat for the valve K, which is secured by its ringk between the inner face of B and the which it is attached to A, while at its summit it is formed into a threaded nozzle or neck E,

by which it may be attached to the pumpstock.

It will be noticed that the flange or rim d depends from an outwardly-projecling flange,

0, whose interior face is adapted to coincide with the end of A. The interior of both flanges or rims b and (Z, however, are somewhat longer than the threading a upon A, so that when either is used, as D is in Fig. l, as a head, merely a space, m, is left between the end of A and the interior ofthe head, such space affording place for the securement of the valve when the head is used as the valvehea'd.

It is to be noted that the internal threading of the necks O andE are to be exactly similar, so that either at will may be secured upon the pumpst-ock, as desired.

As shown in Fig. 1, the head B is used as the valve head and seat, while D is merely used as the head for attaching the cylinder to the pump-stock. If, now, from use or other cause the head B becomes so worn or affected as to no longer afford a reliable bearing or seat for the valve, the cylinder is simply reversed, as in Fig. 2, and the valve K being removed the head B becomes the head for attaching the cylinder to the pump-stock,while the head D'becomes the valve head or seat, within which is secured the valve-plate E,having cage 9 and ball-valve G.

Such construction of the cylinder making both its heads adapted to serve as valve-seats, either being used for such purpose upon'mere reversal of the cylinder, adds to the efficiency and durability of the pump, affording opportunity for economical repair or change of valves without the necessity of new valve heads or ends for the cylinder.

Having thus described myinvention, whatI claim, and desire to secure by Letters Patent,

A- reversible pu1np-cylinder consisting of a body portion screw-threaded at each end, and two heads screwthreaded to fit the body portion, one head provided with a. seat for a clappervalve, and the other head provided with an enlarged chamber and a guide-casing for a ball valve, each head being provided with a presence of two witnesses.

neck and nozzle with screw-threaded interior [0 for attachment to the pump stock, substantially as described. I

In testimony whereof I aifix my signature in HARRY JONES. Witnesses:

CHARLES S. HYER,

EMMAM. GILLETT. 

